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<html lang="en">

<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>js位置书写</title>
</head>

<body>
    <!-- 文件内写js -->
    <!-- <script>
        alert("把握今天");
    </script> -->
    <script src="../js/2-js位置.js"></script>

</body>

</html>